26 Tex. Admin. Code § 554.313 - Interior Finishes-Walls, Ceilings, and Floors
Interior finishes of walls and ceilings must have limited flame-spread rating as required by NFPA 101. Where new interior finishes of walls, ceilings, or floors are applied to existing facilities, the new finishes must meet the requirements for flame-spread ratings for new construction. Fire retardant paints or solutions must not be applied to new materials in an effort to meet flame-spread requirements for new construction. This description of interior finishes does not apply to furniture or accessories.
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